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Ever wonder why some emails hit your inbox while others end up in spam? That’s where email domain reputation comes in. Think of it like a trust score for your email-sending domain. A good reputation means your messages are more likely to be delivered successfully, while a poor one could send them straight to the … Read more
Exim is a mail transfer agent (MTA), which is the software responsible for receiving, routing, and delivering email messages. It’s widely used on Unix-like operating systems and is the default MTA on some Linux distributions. Exim is known for its flexibility, as it allows administrators to control its behavior through a variety of configuration options. … Read more
Troubleshooting can be a daunting task, especially when it’s a Windows issue. Windows, despite its user-friendly interface and widespread popularity, can occasionally throw a curveball your way. From driver problems to software compatibility issues, the list is nearly endless. But fear not! The online world is teeming with experienced users, experts, and communities ready to … Read more
MySQL (MariaDB) is a popular open-source relational database management system (RDBMS) used by millions of applications worldwide. However, like all software systems, it can sometimes suffer from performance issues. This blog post will walk you through enabling MySQL performance logging in Linux, identifying slow-running queries, recognizing queries without indexes, and understanding the importance of indexing … Read more
Choosing the right framework is like picking the perfect tool for a job—it can make or break your project. Frameworks like Laravel and Django simplify web development by providing the tools and structure needed to build powerful applications. Whether you’re a seasoned developer or just starting out, understanding these frameworks can save you time and … Read more
MySQL (MariaDB) is an open-source relational database management system that powers a significant portion of the web. However, to get the most out of it, you need to keep it well-optimized. One of the best ways to achieve that is by using MySQLTuner, a Perl script that quickly reviews your MySQL settings and provides recommendations … Read more
The PostgreSQL GROUP BY clause is an essential tool that every database user needs to understand. We’ll dive into examples of how to use it, including GROUP BY month, day, and year. Data types play a crucial role in determining how data is grouped. The clause groups values into distinct sets where each set contains … Read more
When choosing a database system, PostgreSQL (Postgres) and SQLite are two common options. This article compares their features, strengths, and best use cases. We’ll cover: By the end, you’ll understand both systems and feel confident picking the right one. What Is SQLite? SQLite is a lightweight relational database management system (RDBMS) built as a library. … Read more
We’ll discuss the Postgres ISNULL (IS NULL) condition in this article. We’ll explain what this function does and show examples of how to use it. This operator is more than just a tool for identifying gaps in data. It’s a versatile function used in various contexts and scenarios, allowing for more comprehensive data exploration and … Read more
In this tutorial, we will be going through the steps required to set up a local Simple Mail Transfer Protocol (SMTP) server on an Ubuntu system and then use that server for email notifications in Grafana. This is necessary for the “forgot password” feature to function correctly. A little background on Grafana… Grafana is an … Read more
Java is one of the most popular programming languages worldwide. Choosing the right distribution is critical for your projects. Java SE (Standard Edition) has several distributions, each with distinct features, pricing, and installation methods. This article reviews five top Java distributions, comparing their features, setup steps, and overall value to help you choose the best … Read more
Dependency management is a crucial part of any Node.js project, but it can often lead to frustrating issues, especially when dealing with peer dependencies. Developers using npm 7 or later may encounter errors during package installation due to stricter peer dependency checks. One effective workaround is the npm –legacy-peer-deps option. This guide explains what it … Read more
The ‘unable to get local issuer certificate’ error is a common headache for Node.js developers using npm. If you’re working with npm, understanding this error can save you time and frustration. What Does the Error Mean? When npm tries to verify a server’s SSL/TLS certificate but fails, it throws this error. In simple terms, npm … Read more
BlueStacks lets you run Android apps on your Linux desktop, bridging mobile and desktop systems. With growing demand for Android apps across industries, this emulator has become an essential tool for developers and casual users alike. For Linux enthusiasts, BlueStacks offers a smooth way to expand what their systems can do. What Is BlueStacks? BlueStacks … Read more
In Linux, every file and directory has an associated set of permissions. These permissions determine who can read, write, or execute the file or directory. Using the chmod command is a fundamental aspect of Linux and Unix-like operating systems. We’ll show you several Linux permissions calculators and examples of how to use the chmod comand. … Read more
Understanding the sleep Command in Shell Scripting The sleep command is a simple yet handy tool in shell scripting. Its syntax looks like this: • NUMBER: The duration for which the command pauses. • SUFFIX (optional): Defines the unit of time. • s: seconds (default if no suffix is used) • m: minutes • h: … Read more
Part 1: Introduction to Cascading Windows in Windows 11 Introduction to Windows 11 Windows 11, the latest iteration of Microsoft’s renowned operating system, is not only a visually stunning update but also one that introduces a plethora of exciting, unique features. It carries forward the legacy of its predecessor with an emphasis on productivity and … Read more
Introduction to Bash and YAML Bash, short for Bourne Again Shell, is a Unix-based command interpreter created by the GNU Project. It lets users enter text commands to run programs, manage files, and perform system tasks. Bash is widely used because it’s flexible and supports scripting, which makes automating complex tasks easier. YAML, short for … Read more
Understanding how to effectively install PostgreSQL on AWS EC2 Linux is a critical skill for database management in the cloud. AWS EC2 provides secure, resizable compute capacity, while PostgreSQL offers an advanced open-source database system. Mastering the installation process is the first step towards leveraging these powerful tools. Pre-requisites for Installing PostgreSQL on AWS EC2 … Read more
Part I: Understanding PostgreSQL and CPU Usage Introduction to PostgreSQL and High CPU Usage PostgreSQL, an open-source relational database system, is known for its robustness and advanced features. Yet, just like any other technology, it can encounter issues such as high CPU usage. High CPU usage occurs when processes and applications use more CPU power … Read more
PostgreSQL is a popular open-source relational database management system (RDBMS) known for its robustness and advanced features. One of these features is its ability to manage and manipulate indexes, which significantly contribute to database performance optimization. Database indexing, just like the index of a book, provides swift access to specific information in a database without … Read more
Managing databases often requires cleaning up tables, whether for testing, development, or maintenance purposes. If you’re using PostgreSQL and looking for efficient ways to delete all tables in a database, you’re in the right place. This guide explores the most effective methods to delete all tables in PostgreSQL, complete with examples to simplify your learning … Read more
Plex Media Server is a powerful software that lets you organize and stream your media collection across devices. It’s essential to regularly update Plex to ensure you’re benefiting from the latest features, improved performance, and crucial security patches. Preparing for the Update Before updating your Plex Media Server, there are a few things you should … Read more
Seeing an “API rate limit exceeded” error? Here’s what you need to know to avoid it. An API (Application Programming Interface) lets different software systems communicate and exchange data. APIs are essential for modern apps, connecting components and making them more functional and integrated. For example, APIs enable features like sharing articles on social media, … Read more
TestRail is a comprehensive test case management tool designed for quality assurance teams. It offers an easy way to manage, track, and organize your testing efforts, boosting your team’s productivity. The TestRail API allows you to interact with TestRail’s functionalities programmatically. This interface provides the ability to add, update, or extract data from your TestRail … Read more